DATA SECRECY STATISTICAL PROCESSING SYSTEM, SERVER DEVICE FOR PRESENTING STATISTICAL PROCESSING RESULT, DATA INPUT DEVICE, AND PROGRAM AND METHOD THEREFOR

摘要

The purpose of the present invention is to acquire a result of statistical processing for aggregated original data while reducing the risk of leaking confidential information without delivering and storing the original data. Each of a plurality of data input devices comprises: a means for acquiring original data, which is confidential; and a means for dividing the original data into data segments in accordance with a secret ratio so that the original data is restored to its original state by combining all of the data segments, and outputting a prescribed number of the data segments. Each of a prescribed number of computation devices includes a means for performing a prescribed computation on the basis of a plurality of input data, and performs a computation on the data segments outputted from each of the plurality of data input devices as input data and outputs the computation results. A data processing device uses the computation results outputted from each of the prescribed number of computation devices to obtain and provide, as a service, statistical processing results based on a plurality of the original data acquired by the plurality of data input devices without the acquisition of the original data.